Yep, either the F. K. 5 or 6-one example of each built, with the 6 being the follow-on to the 5. Fuselage height/depth suggests the illustration is the F. K. 6. By the time it was actually designed and ready for testing, it was already obsolete, and fortunately for the aircrews that would otherwise have had to fly it, the status was recognized-a sharp contrast to several Royal Aircraft Factory products of the First World War.

And the designation "FK" for Armstrong-Whitworth aircraft products refers to Frederick Koolhoven, a Dutch designer working for Ack-W. (And what other famous Dutch aircraft designers of the period do we know about?).

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On the kinkometer, my kink measures as a sine wave.